/**
 * Copyright (c) 2009, Microsoft
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Microsoft nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Microsoft ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL Microsoft BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @category   Microsoft
 * @package    WebErrorPHPToolkit
 * @subpackage Error
 * @version    $Id: sting_builder.js, v 1.0 2009-10-09 08:00:00Z unknown $
 * @copyright  Copyright (c) 2009, Microsoft (http://www.microsoft.com)
 * @author     a-jetann
 *
 * The StringBuilder class only provides four methods:
 * a constructor, 
 * an append method,
 * a clear method, and
 * a toString method.
 */

/**
 * Initializes a new instance of the StringBuilder class
 * and appends the given value if supplied
 *
 * @param value string Start of string being built.
 */
function StringBuilder(value)
{
  this.strings = new Array("");
  this.append(value);
}

/**
 * Appends the given value to the end of this instance.
 *
 * @param value string String be appended.
 */
StringBuilder.prototype.append = function (value)
{
  if (value)
  {
    this.strings.push(value);
  }
};

/**
 * Clears the string buffer
 */
StringBuilder.prototype.clear = function ()
{
  this.strings.length = 1;
};

/**
 * Converts this instance to a String.
 */
StringBuilder.prototype.toString = function ()
{
  return this.strings.join("");
}; 